package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.UserReportVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServieImpl implements UserService {
    private final static String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    WeChatProperties weChatProperties;
    @Autowired
    UserMapper userMapper;
    /**
     * 用户登录
     * @param userLoginDTO
     * @return
     */
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务，获取当前微信用户的openid
        String openId = getOpenId(userLoginDTO.getCode());
        //判断微信用户openid是否为空
        if(openId==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断当前用户是否为新用户
        User user=userMapper.getByOpenId(openId);
        //如果时新用户自动完成注册
        if(user==null){
            user=User.builder()
                    .openid(openId)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }
        //返回这个用户对象
        return user;
    }
    private String getOpenId(String code){
        Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String response = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject json=JSONObject.parseObject(response);
        String openid = json.getString("openid");
        return openid;
    }
}
